Add missing cases. Thanks to polarjs for bug 393.

Review URL: http://codereview.chromium.org/151112

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2313 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/code-stubs.cc

@@ -133,6 +133,10 @@ const char* CodeStub::MajorName(CodeStub::Major major_key) {
       return "InvokeBuiltin";
     case JSExit:
       return "JSExit";
+    case ConvertToDouble:
+      return "ConvertToDouble";
+    case WriteInt32ToHeapNumber:
+      return "WriteInt32ToHeapNumber";
     default:
       UNREACHABLE();
       return NULL;